>I have a materials question. What is the best type of tempera paint? The >Crayola paint we have been using is easy to use, but the quality is uneven. >Any suggestions?

This is not a true tempera, but I have been enjoying BioColor from
Discount School Supply. It is very bright, a bit transparent, and if you
paint on a window, it peels off. It has an acyrlic base, I think. Also
very washable.